Parker 322HB-10-6N Barbed Tube Union Connector 5/8x3/8

Product Description

The PARKER 322HB-10-6N is a barbed tube union connector designed to join two flexible tube lines at a reduced diameter transition. The fitting connects a 5/8-inch barb on one end to a 3/8-inch barb on the other, making it a standard reducer union for low-pressure fluid or pneumatic tubing applications. Molded from nylon, the connector offers lightweight construction and resistance to common chemicals found in HVAC, plumbing, and fluid transfer systems. It weighs 0.01 pounds and is sold individually. Plumbers, HVAC technicians, and general mechanical tradespeople typically install this type of fitting during equipment assembly or line repair.

This union connector suits residential and light commercial applications where flexible tubing must be joined or transitioned between two different outside diameters. Common use cases include condensate drain lines, equipment cooling circuits, and low-pressure fluid handling assemblies. The nylon construction makes it appropriate for non-aggressive media at moderate temperatures. It is not intended for high-pressure hydraulic or refrigerant lines. This fitting is typically found in maintenance and repair kits or used during original equipment assembly where a quick, secure barb connection is needed without tools.

Key Features

• Reduces from 5/8-inch barb to 3/8-inch barb in a single union fitting
• Nylon construction — lightweight, corrosion-resistant, and compatible with common fluids
• White finish allows easy visual identification in multi-line installations
• Barbed design creates a secure grip on flexible tubing without additional fittings or tools
• Compact form factor suits tight equipment enclosures and panel interiors

Compatibility

Designed as an OEM-style replacement or service fitting for flexible tubing systems requiring a 5/8-inch to 3/8-inch barbed union connection in residential and light commercial equipment.

Installation Notes

Installation does not require special tools — push flexible tubing firmly over each barb until the tube seats past the retention bead. Shut off fluid flow and relieve any system pressure before disconnecting or replacing this fitting. For condensate or drain line applications, ensure the tubing is rated for the media temperature and chemical content present in the system. Secure tubing with a clamp if vibration or elevated pressure is a concern.